2001-11-02 Phil Edwards <pme@gcc.gnu.org>

[pf3gnuchains/gcc-fork.git] / libstdc++-v3 / include / bits / type_traits.h

diff --git a/libstdc++-v3/include/bits/type_traits.h b/libstdc++-v3/include/bits/type_traits.h
index 70b3522..89e50f3 100644 (file)
--- a/libstdc++-v3/include/bits/type_traits.h
+++ b/libstdc++-v3/include/bits/type_traits.h
@@ -1,3 +1,32 @@
+// Type traits implementation -*- C++ -*-
+
+// Copyright (C) 2001 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 2, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING.  If not, write to the Free
+// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// As a special exception, you may use this file as part of a free software
+// library without restriction.  Specifically, if other files instantiate
+// templates or use macros or inline functions from this file, or you compile
+// this file and link it with other files to produce an executable, this
+// file does not by itself cause the resulting executable to be covered by
+// the GNU General Public License.  This exception does not however
+// invalidate any other reasons why the executable file might be covered by
+// the GNU General Public License.
+
 /*
  *
  * Copyright (c) 1997
@@ -12,6 +41,11 @@
  * purpose.  It is provided "as is" without express or implied warranty.
  */
 
+/** @file type_traits.h
+ *  This is an internal header file, included by other library headers.
+ *  You should not attempt to use it directly.
+ */
+
 #ifndef _CPP_BITS_TYPE_TRAITS_H
 #define _CPP_BITS_TYPE_TRAITS_H 1
 
@@ -53,10 +87,8 @@ template <class _Tp> inline void copy(_Tp* __source,_Tp* __destination,int __n)
 }
 */
 
-
-template <bool _Truth> struct _Bool {};
-typedef _Bool<true>  __true_type;
-typedef _Bool<false> __false_type;
+struct __true_type {};
+struct __false_type {};
 
 template <class _Tp>
 struct __type_traits { 
@@ -176,8 +208,6 @@ template<> struct __type_traits<unsigned long> {
    typedef __true_type    is_POD_type;
 };
 
-#ifdef _GLIBCPP_USE_LONG_LONG
-
 template<> struct __type_traits<long long> {
    typedef __true_type    has_trivial_default_constructor;
    typedef __true_type    has_trivial_copy_constructor;
@@ -194,8 +224,6 @@ template<> struct __type_traits<unsigned long long> {
    typedef __true_type    is_POD_type;
 };
 
-#endif /* _GLIBCPP_USE_LONG_LONG */
-
 template<> struct __type_traits<float> {
    typedef __true_type    has_trivial_default_constructor;
    typedef __true_type    has_trivial_copy_constructor;
@@ -281,8 +309,6 @@ template<> struct _Is_integer<unsigned long> {
   typedef __true_type _Integral;
 };
 
-#ifdef _GLIBCPP_USE_LONG_LONG
-
 template<> struct _Is_integer<long long> {
   typedef __true_type _Integral;
 };
@@ -291,16 +317,15 @@ template<> struct _Is_integer<unsigned long long> {
   typedef __true_type _Integral;
 };
 
-#endif /* _GLIBCPP_USE_LONG_LONG */
-
 template<typename _Tp> struct _Is_normal_iterator {
    typedef __false_type _Normal;
 };
 
 // Forward declaration hack, should really include this from somewhere.
-namespace std {
-   template<typename _Iterator, typename _Container> class __normal_iterator;
-};
+namespace std 
+{
+  template<typename _Iterator, typename _Container> class __normal_iterator;
+}
 
 template<typename _Iterator, typename _Container>
 struct _Is_normal_iterator< std::__normal_iterator<_Iterator, _Container> > {